Ramayana
यो ऽपि पालयते विप्रः सो ऽपि गामन्वगाद्द्रुतम् । गत्वा तमृषिमाचष्ट मम गौरिति सत्वरम् ॥ 7-53-14 ॥
The brahmin who was tending her also swiftly followed the cow, and going up to that sage he declared at once, "This is my cow."
english translation